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- W2057511853 abstract "Silver-zinc alloys of several morphologies are found in silver crusts originating from industrial and laboratory lead-desilverizing processes. Electron microprobe analyses indicate specific compositional ranges for these morphologies. The silver content of the alloys varied from 11 to 36 wt.%; Ag/Zn ratios generally were in the range 0.15–0.55. Copper generally replaces silver in the recovery process, and its presence therefore reduces the yield of silver. Application of an inverted temperature gradient to a desilverizing kettle was found to be ineffectivefor batch processes. High-temperature centrifugation of highly oxidized crusts resulted in improved metal separation. Résumé Les alliages d'argent-zinc de plusieurs morphologies sont trouvés dans les croûtes d'argent provenant des procédés de désargentation du plomb, en industries et laboratoire. Des microanalyses a sonde électronique indiquent des zones constituantes spécifiques pour ces morphologies. Le contenu spécific des alliages varient de 11–36 %; lestaux Ag–Zn étaient généralement dans la zone de 0.15–0.55. Le cuivre remplace généralement l'argent lors du procédé de récupération, et sa présence réduit alors la tension de l'argent. L'application d'une température intervertie gradiente à une poche de désargentation s'est avérée vaine pour les procédés à charges. La centrifugation à haute température de croûtes très oxidées, a abouti à une séparathion améliorée du métal." @default.
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- W2057511853 date "1980-04-01" @default.
- W2057511853 modified "2023-09-26" @default.
- W2057511853 title "Occurrences of Ag–Zn Alloys in the Desilverizing of Lead Bullion" @default.
- W2057511853 cites W2011393384 @default.
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- W2057511853 doi "https://doi.org/10.1179/cmq.1980.19.2.201" @default.
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